Physics
Scientific paper
Apr 1992
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1992jgr....97.4099l&link_type=abstract
Journal of Geophysical Research (ISSN 0148-0227), vol. 97, no. A4, April 1, 1992, p. 4099-4107.
Physics
12
Association Reactions, Barium Ion Clouds, Critical Velocity, Ion Beams, Ion Production Rates, Ionospheric Ion Density, Atmospheric Chemistry, Chemical Clouds, Space Plasmas
Scientific paper
The importance of associative ionization (AI) in barium jet critical ionization velocity (CIV) experiments in space is discussed. It is suggested that AI reactions involving barium may occur in these experiments, and since the products would be indistinguishable from those generated by electron impact ionization, it is likely that the AI-generated ions may be mistaken for those generated by CIV. The electrons formed in AI and by electron impact may be energized by the ion beams, generated by both CIV and AI. The energized electrons may ionize, enhancing the CIV process. In this way, the AI-CIV double process could amplify CIV. The amplification is especially important for sustaining CIV when the CIV energy budget is tight or when the ionization rate due to CIV alone is too low to satisfy Townsend's criterion. An AI-assisted experiment in which a samarium beam could undergo AI, promoting CIV in an accompanying xenon beam, is suggested.
Lai Shu T.
McNeil William J.
Murad Edmond
No associations
LandOfFree
Amplification of critical velocity ionization by associative ionization does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.
If you have personal experience with Amplification of critical velocity ionization by associative ionization, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Amplification of critical velocity ionization by associative ionization will most certainly appreciate the feedback.
Profile ID: LFWR-SCP-O-1737701